diff --git a/ship/src/main/scala/ch/epfl/bluebrain/nexus/ship/EventStreamer.scala b/ship/src/main/scala/ch/epfl/bluebrain/nexus/ship/EventStreamer.scala
index 6515264e13..7a96c78d2f 100644
--- a/ship/src/main/scala/ch/epfl/bluebrain/nexus/ship/EventStreamer.scala
+++ b/ship/src/main/scala/ch/epfl/bluebrain/nexus/ship/EventStreamer.scala
@@ -5,7 +5,8 @@ import ch.epfl.bluebrain.nexus.delta.kernel.Logger
 import ch.epfl.bluebrain.nexus.delta.sourcing.exporter.RowEvent
 import ch.epfl.bluebrain.nexus.delta.sourcing.offset.Offset
 import ch.epfl.bluebrain.nexus.ship.EventStreamer.logger
-import eu.timepit.refined.types.string.NonEmptyString
+import eu.timepit.refined.collection.NonEmpty
+import eu.timepit.refined.refineV
 import fs2.aws.s3.S3
 import fs2.aws.s3.models.Models.{BucketName, FileKey}
 import fs2.io.file.{Files, Path}
@@ -52,24 +53,33 @@ object EventStreamer {
 
   private val logger = Logger[EventStreamer]
 
-  def s3eventStreamer(client: S3AsyncClientOp[IO], bucket: BucketName): EventStreamer = new EventStreamer {
+  def s3eventStreamer(client: S3AsyncClientOp[IO], bucket: String): EventStreamer = new EventStreamer {
+
+    import cats.implicits._
 
     override def streamLines(path: Path): Stream[IO, String] =
-      S3.create(client)
-        .readFile(bucket, FileKey.apply(NonEmptyString.unsafeFrom(path.toString)))
-        .through(text.utf8.decode)
-        .through(text.lines)
+      for {
+        bk    <- Stream.fromEither[IO](refineString(bucket))
+        key   <- Stream.fromEither[IO](refineString(path.toString))
+        lines <- S3.create(client)
+                   .readFile(BucketName(bk), FileKey(key))
+                   .through(text.utf8.decode)
+                   .through(text.lines)
+      } yield lines
 
     override def fileList(path: Path): IO[List[Path]] =
       client
-        .listObjectsV2(ListObjectsV2Request.builder().bucket(bucket.value.value).prefix(path.toString).build())
+        .listObjectsV2(ListObjectsV2Request.builder().bucket(bucket).prefix(path.toString).build())
         .map(_.contents().asScala.map(obj => Path(obj.key())).toList)
 
     override def isDirectory(path: Path): IO[Boolean] =
       client
-        .listObjectsV2(ListObjectsV2Request.builder().bucket(bucket.value.value).prefix(path.toString).build())
+        .listObjectsV2(ListObjectsV2Request.builder().bucket(bucket).prefix(path.toString).build())
         .map(_.keyCount() > 1)
 
+    private def refineString(str: String) =
+      refineV[NonEmpty](str).leftMap(e => new IllegalArgumentException(e))
+
   }
 
   def localStreamer: EventStreamer = new EventStreamer {
diff --git a/ship/src/main/scala/ch/epfl/bluebrain/nexus/ship/RunShip.scala b/ship/src/main/scala/ch/epfl/bluebrain/nexus/ship/RunShip.scala
index 79048e37cf..014e4518f5 100644
--- a/ship/src/main/scala/ch/epfl/bluebrain/nexus/ship/RunShip.scala
+++ b/ship/src/main/scala/ch/epfl/bluebrain/nexus/ship/RunShip.scala
@@ -19,9 +19,7 @@ import ch.epfl.bluebrain.nexus.ship.resolvers.ResolverProcessor
 import ch.epfl.bluebrain.nexus.ship.resources.{ResourceProcessor, ResourceWiring}
 import ch.epfl.bluebrain.nexus.ship.schemas.{SchemaProcessor, SchemaWiring}
 import ch.epfl.bluebrain.nexus.ship.views.{BlazegraphViewProcessor, CompositeViewProcessor, ElasticSearchViewProcessor}
-import eu.timepit.refined.types.string.NonEmptyString
 import fs2.Stream
-import fs2.aws.s3.models.Models.BucketName
 import fs2.io.file.Path
 import io.laserdisc.pure.s3.tagless.S3AsyncClientOp
 
@@ -94,12 +92,10 @@ object RunShip {
   }
 
   def s3Ship(client: S3AsyncClientOp[IO], bucket: String) = new RunShip {
-    override def eventsStream(path: Path, fromOffset: Offset): Stream[IO, RowEvent] = {
-      val bk = BucketName(NonEmptyString.unsafeFrom(bucket))
+    override def eventsStream(path: Path, fromOffset: Offset): Stream[IO, RowEvent] =
       EventStreamer
-        .s3eventStreamer(client, bk)
+        .s3eventStreamer(client, bucket)
         .stream(path, fromOffset)
-    }
   }
 
 }
diff --git a/ship/src/test/scala/ch/epfl/bluebrain/nexus/ship/RunShipSuite.scala b/ship/src/test/scala/ch/epfl/bluebrain/nexus/ship/RunShipSuite.scala
index cfa850d899..4f362b63eb 100644
--- a/ship/src/test/scala/ch/epfl/bluebrain/nexus/ship/RunShipSuite.scala
+++ b/ship/src/test/scala/ch/epfl/bluebrain/nexus/ship/RunShipSuite.scala
@@ -51,7 +51,8 @@ class RunShipSuite extends NexusSuite with RunShipSuite.Fixture with LocalStackS
     val directoryPath = Path("/import/multi-part-import")
     for {
       _ <- uploadImportFileToS3(s3Client, "bucket", Path("/import/multi-part-import/2024-04-05T14:38:31.165389Z.json"))
-      _ <- uploadImportFileToS3(s3Client, "bucket", Path("/import/multi-part-import/2024-04-05T14:38:31.165389Z.success"))
+      _ <-
+        uploadImportFileToS3(s3Client, "bucket", Path("/import/multi-part-import/2024-04-05T14:38:31.165389Z.success"))
       _ <- uploadImportFileToS3(s3Client, "bucket", Path("/import/multi-part-import/2024-04-06T11:34:31.165389Z.json"))
       _ <- RunShip
              .s3Ship(s3Client.underlyingClient, "bucket")